21124126620362 has 8 divisors (see below), whose sum is σ = 31700354528196. Its totient is φ = 10557341777632.

The previous prime is 21124126620287. The next prime is 21124126620379. The reversal of 21124126620362 is 26302662142112.

It can be written as a sum of positive squares in 2 ways, for example, as 20131634475241 + 992492145121 = 4486829^2 + 996239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21124126620362² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2360760683 + ... + 2360769630.

Almost surely, 2^{21124126620362} is an apocalyptic number.

21124126620362 is a deficient number, since it is larger than the sum of its proper divisors (10576227907834).

21124126620362 is a wasteful number, since it uses less digits than its factorization.

21124126620362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4721532552.

The product of its (nonzero) digits is 82944, while the sum is 38.

Adding to 21124126620362 its reverse (26302662142112), we get a palindrome (47426788762474).

The spelling of 21124126620362 in words is "twenty-one trillion, one hundred twenty-four billion, one hundred twenty-six million, six hundred twenty thousand, three hundred sixty-two".